mapOrNull<TResult extends Object?> method

  1. @optionalTypeArgs
TResult? mapOrNull<TResult extends Object?>({
  1. TResult? embedImagesView(
    1. UEmbedRecordWithMediaViewMediaEmbedImagesView value
    )?,
  2. TResult? embedVideoView(
    1. UEmbedRecordWithMediaViewMediaEmbedVideoView value
    )?,
  3. TResult? embedExternalView(
    1. UEmbedRecordWithMediaViewMediaEmbedExternalView value
    )?,
  4. TResult? unknown(
    1. UEmbedRecordWithMediaViewMediaUnknown value
    )?,
})

A variant of map that fallback to returning null.

It is equivalent to doing:

switch (sealedClass) {
  case final Subclass value:
    return ...;
  case _:
    return null;
}

Implementation

@optionalTypeArgs TResult? mapOrNull<TResult extends Object?>({TResult? Function( UEmbedRecordWithMediaViewMediaEmbedImagesView value)?  embedImagesView,TResult? Function( UEmbedRecordWithMediaViewMediaEmbedVideoView value)?  embedVideoView,TResult? Function( UEmbedRecordWithMediaViewMediaEmbedExternalView value)?  embedExternalView,TResult? Function( UEmbedRecordWithMediaViewMediaUnknown value)?  unknown,}){
final _that = this;
switch (_that) {
case UEmbedRecordWithMediaViewMediaEmbedImagesView() when embedImagesView != null:
return embedImagesView(_that);case UEmbedRecordWithMediaViewMediaEmbedVideoView() when embedVideoView != null:
return embedVideoView(_that);case UEmbedRecordWithMediaViewMediaEmbedExternalView() when embedExternalView != null:
return embedExternalView(_that);case UEmbedRecordWithMediaViewMediaUnknown() when unknown != null:
return unknown(_that);case _:
  return null;

}
}